Question

factorize the following
(I) a^4 - 4
please give me answer correct answer anyone ​

Answer 1

see the above attachment

hope it helps you

Answer 2

we know that

a² - b² = (a + b) (a - b)

a⁴ - 4

(a²)² - 2²

(a² + 2) (a² - 2)

(a² + 2) (a - √2) (a + √2)